Steel pipe knowledge

Artificial salt spray tests are widely used to determine the corrosion resistance of metal products. The most common type of salt spray test is the neutral salt spray test (NSS test), which uses a 5% sodium chloride solution with a pH range of 6-7 as the spray solution. The temperature is maintained at 35°C, and the salt fog deposition rate is between 1-2ml/80cm².h.

With the country's emphasis on rural development, the construction of new rural areas in China has been in full swing in recent years. So in the process of building new rural areas, what kind of houses are suitable to be built?

The General Assembly considered and adopted the constitution of the Federation, the system of the Council, the system of the Supervisory Board and the criteria for membership fees. The General Assembly voted and adopted the first council members, leadership group members and supervisory board members on site. Tianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd. was appointed as the first council member as a national single champion demonstration enterprise.

As for how to choose high-quality rectangular tubes, I would like to share my opinion, hoping to have some reference for you. What kind of high-quality square tube is a trustworthy product or service? Many people have doubts about the mass of high-quality square tube.

In today's era of economic globalization, the competition in various industries is also increasingly fierce. As a kind of metal pipe, the price of small diameter seamless square pipe is also rising gradually.

Square tube with sharp corners: how to distinguish between large and small diameter? What are the differences in practical applications?

The production process of straight seam steel pipe is relatively simple. The main production processes are high-frequency welded straight seam steel pipe and submerged arc welded straight seam steel pipe. Straight seam steel pipe has high production efficiency, low cost and rapid development.
The strength of spiral steel pipe is usually higher than that of straight seam steel pipe. The main production process is submerged arc welding.

The square tube market is a mixture of good and bad, and the quality of square tube products is also very different. In order to let customers pay attention to the difference, today we summarize the following methods to identify the quality of square tube products.

The quality control of yuantai steel pipe is very strict, so customers can choose with confidence.Yuantai company Obtained 77 patents，Yuantai steel has won the single champion of rectangular tube industry for 10 consecutive years,

If you need to obtain yuantai steel pipe price，Please contact us.

During the production of square and rectangular tubes, the feeding accuracy directly affects the accuracy and quality of the formed products. Today we will introduce seven factors that affect the feeding accuracy of rectangular tube:

Seamless square and rectangular tubes have good strength, toughness, plasticity, welding, and other technological properties, and good ductility. Its alloy layer is firmly attached to the steel base. Therefore, seamless square and rectangular tubes can be formed by cold punching, rolling, wire drawing, and bending without damaging the coating. It is suitable for general processing such as drilling, cutting, welding, cold bending, and other processes.

Hot dip galvanized steel pipe, also known as hot dip galvanized pipe, is a kind of steel pipe that is galvanized to improve its service performance. Based on the principle of combination and wide application, it is determined that the alloy layer is produced by the reaction of the substrate, thus combining the substrate with the coating. How are hot-dip galvanized steel pipes processed? The process flow of hot-dip galvanized steel pipe is divided into the following steps:

Square tube is a kind of material commonly used in the industrial construction industry, with a large demand. There are many square tube products on the market, and the quality is uneven. Attention should be paid to the selection method when selecting:

In order to improve the surface hardness and wear resistance of 16Mn rectangular tubes, surface treatment, such as surface flame, high-frequency surface quenching, chemical heat treatment, etc.

The longitudinal submerged arc welding pipe is produced by rolling the steel plate into a cylindrical shape and connecting the two ends together through linear welding.

At present, 16Mn seamless square pipe technology has been extremely mature, and there are corresponding product standards and various types of application technologies.

The production process of high-frequency welded pipe mainly depends on the variety of products.

In the prior art, a two-step method is used to connect q355b rectangular tubes.